Air Quality Index
El Cajon, CA 92019
Air Quality
| Today's Air Quality - San Diego Mesa and Inland Valley, CA | |||
|---|---|---|---|
| Date | Code | AQI Level | Major Pollutant |
| 2/20/2012 8:00 PM | 42 | Small Particulate Matter | |
| Air Quality Forecast - San Diego Mesa and Inland Valley, CA | |||
| Date | Code | AQI Level | Major Pollutant |
| 2/20/2012 | N/A | Ozone | |
| 2/20/2012 | N/A | Ozone | |
| 2/23/2012 | N/A | Ozone | |
| 2/23/2012 | N/A | Small Particulate Matter | |
| Air Quality Index (AQI) Scale | |||
|---|---|---|---|
| AQI Color | AQI Category | AQI Numbers | |
| Good | 0-50 | ||
| Moderate | 51-100 | ||
| Unhealthy for Sensitive Groups | 101-150 | ||
| Unhealthy | 151-200 | ||
| Very Unhealthy | 201-300 | ||
| Hazardous | 301-500+ | ||
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Hourly Forecast for El Cajon, CA 92019
| Time | Conditions | Sky Cover | Chance of Precip. | Heat Index Wind Chill | Wind |
|---|---|---|---|---|---|
| Monday, February 20, 2012 | |||||
| 9 pm |
49° F
| 33% | 3% | 48° F | From SE 4 mph |
| 10 pm |
48° F
| 34% | 3% | 48° F | From NE 3 mph |
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What is AQI?
The AQI is an index for reporting daily air quality. It tells you how clean or polluted your air is, and what associated health concerns you should be aware of. The AQI focuses on health effects that can happen within a few hours or days after breathing polluted air. EPA uses the AQI for five major air pollutants regulated by the Clean Air Act: ground-level ozone, particulate matter, carbon monoxide, sulfur dioxide, and nitrogen dioxide. For each of these pollutants, EPA has established national air quality standards to protect against harmful health. (EPA-454K-03-002, August 2003, http://www.airnow.gov/)
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